spectral
spectral


Author Comment Last activity Moderation
ramprasadraju1998 "Model Papers 2020 " | Read more » over 2 years ago
phibli "@jenjimah I also struggled with this and give your workaround using OBS a go. Let's see...keep you posted! :) @warren has anyone tried to use the ..." | Read more » almost 3 years ago
jenjimah "Yes when you see the live webcam feed on pi.local, you're basically just accessing a website which is streaming the pi camera video, so it doesn't ..." | Read more » almost 3 years ago
warren "Hi, i think your message somehow got deleted? But i got it by email. Actually the Pi camera doesn't connect to a computer by USB as a webcam in ge..." | Read more » almost 3 years ago
warren "Hi, thanks for posting your question. There are some answers here: https://publiclab.org/questions/cedarlodge/02-27-2018/uploading-images-from-rasp..." | Read more » almost 3 years ago
jpschaaf "I never really knew much about spectrometers (and still don't) but I happened on an article about green laser pointers which mentioned that a numbe..." | Read more » over 4 years ago
Swede2 "Oh, that's great. I'm glad the comment was useful. If you are satisfied with your hand built version, I'd recommend ordering the desktop version. I..." | Read more » over 4 years ago
warren "Ooh, good question on the camera! Post a question at #spectrometry and i know people have tried a lot of cameras! " | Read more » over 4 years ago
jpschaaf "By the way, thanks for mentioning the use of electrical tape. Applying that suggestion took my attempt to build one from nearly worthless to vague..." | Read more » over 4 years ago
warren "There may also be some mis-auto-focusing by the smartphone camera. Over-exposure too, but also try getting the focus to lock on the more detailed l..." | Read more » over 4 years ago
stef "Your image is way over exposed. You should be aware that this is an entry level project. The desk top is also used to stimulate discussion. Please..." | Read more » over 4 years ago
Swede2 "I'm adding one more discovery. I had been using a CD-R for the window because I have plenty of scrap versions of them. I decided to sacrifice a DV..." | Read more » over 4 years ago
warren "That's so awesome, @sanchittechnogeek -- did it go smoothly for you? any trouble, or improvements you made? " | Read more » over 4 years ago
sanchittechnogeek "Created a spectrometer! :) here are the pics below! " | Read more » over 5 years ago
warren "Ah, i see you've already approached this topic, sorry to repeat! " | Read more » over 5 years ago
iamkat "Ah that's really helpful to know, thank you! " | Read more » over 5 years ago
cfastie "Thanks for the details. After you use a CFL to calibrate the spectrometer, replace the CFL with another light source. If the spectrometer is not d..." | Read more » over 5 years ago
iamkat "Hi Chris, what do you mean by a standard lycopene extraction? The UV spec of lycopene in ether can be found here http://link.springer.com/article/..." | Read more » over 5 years ago
cfastie "Kat, Do you have a standard lycopene extraction? How do know what the spectrum of lycopene should look like? Are you using a fluorescent lamp to ..." | Read more » over 5 years ago
warren "Wow, this is super impressive!!! " | Read more » over 5 years ago
khufkens "There are three variables in this setup: 1) the light source's output, which needs to be characterized or idealized (you could use the sun as a re..." | Read more » about 7 years ago
warren "Uh, perhaps I am not fully understanding on my initial readthrough, but since we have a big need to characterize sensitivity in the webcams we use ..." | Read more » about 7 years ago
khufkens "If I can back out the spectral response I'll post it online for sure. So give it some time. " | Read more » about 7 years ago
DarylWM "Thanks for sharing your work. I've had the same trouble trying to find the spectral response curve for the OV5647 sensor, so this technique was ver..." | Read more » about 7 years ago